1 Department of Pediatric Oncology and Hematology, University Children's Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Germany; Department of Pediatric and Adolescent Medicine, Gemeinschaftskrankenhaus Herdecke, Gerhard-Kienle-Weg 4, 58313, Herdecke, Germany.
2 Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Germany.
3 Medical Oncology, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany.
4 Department of Pediatric Oncology and Hematology, University Children's Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Germany.
5 Department of Pediartric Oncology and Hematology, University Children's Hospital of Cologne, Medical Faculty, University of Cologne, Kerpener Str. 63, 50937, Cologne, Germany.
6 Institute of Pathology, University Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany.
7 Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Hufelandstr. 55, 45147, Essen, Germany. Electronic address: laura.steenpass@dsmz.de.